Self-filling fotjmtaiw-penv



T. A. DICKINSON.

SELF FILLING FOUNTAIN PEN.

APPLICATION FILED DEGl 22. i919.

. Patented July 13, 11920.

'rarg THOMAS A, Dickinson, or YoUNGs'rown oHIo.

' SELF-FILLING FOUNTAIN-PEN.

isaaisa,

To all 'whom t may concern:

Be it known that I, THOMAS A; DICKIN- soN, a subject of the King ofGreat Britain, residing at Youngstown, in the county of Mahoning andState of Ohio, have invented a new and useful @elf-Filling Fountain-Pen,of which the following is a specification.

This invention relates to improvements in fountain pens and has moreespecialireference to a self-filling fountain .penformed of transparentmaterial in order that the user may see the amount of ink containedinthe en. v l i The objects of the invention are to provide a pen oftransparent material through which the ink contained within the barrelof the pen will always be visible; to provide a selffilling fountain pencontaining aminimum ynumber of parts; and to provideva fountain pen ofthis character which is simple and inexpensive to manufacture andefficient in use and arranged to use up the last drop of ink containedwithin the barrel thereof.

With these objects in view the invention consists4 in the novelconstruction and ar*- rangement of parts, hereinafter described,illustrated in the accompanying drawings,

and particularly pointed out in the appended claims, it being understoodthat various changes in the form, proportions, size and minor details ofconstruction may be made within the scope of the appended claims,without departing from the spirit or sacriicing any of the advantages ofthe invention.

The invention thus set `forth in general terms is illustrated in theaccompanying drawings forming part hereof, in whichV Figure 1 is alongitudinal sectional view through a pen employing the inventionshowing the same ready for use.

Fig. 2 is a similar View showing the operation thereof for filling, and

Fig. 3 is a perspective view of the end portion of the barrel.

A practical embodiment of the invention is disclosed in the accompanyingdrawings, forming a part of this specification in which similar numeralsof reference indicate corresponding parts throughout the several views.

The barrel 1 of the pen is preferably formed of a suitable transparentvmaterialand although the barrel is illustrated in the drawings as madeof one piece it will be understood that this barrel may be made of oneor two pieces in order to form it of specification of Letters Patent.

'PatentedJ 1115 13, 1920.

,v Applicationled December 22, 1919. Serial No. 346,707.

different materials. The lower or writing end of the barrel is reducedand provided with the usual neck portion 2 having mounted therein theprotruding nozzle 3 which carries the pen point 4 slotted at 5 in theusual manner. Y f

Attention is directed to the channel 6 in the nozzle. This channelextending through vthe longitudinal center of the nozzle instead vofbeing ,located directly beneath the pen in 6 extends downwardly to thehole 7 in the Y pen point ink may be drawn into the ink chamber ofthepen from a lower level than is possible with the ordinary type ofself filling fountain pens. v y

The rear or upper end of the penis pro vided with the endwall 9 havingthe conical valve seat 10 therein, a reduced externally threaded neck 11protruding beyond said end wall. This neck is provided with longitudinalgrooves 12 extending from the usual end thereof to a point near thelower or inner end of the threads and a cap 13 is threadedv upon theneck and arranged to normally fit snugly against the rear end of thebarrel portion of the pen, thus closing the grooves 12.

A rubber Vdisk 14 is cemented or otherwise securely attached to theinner face of the cap and cemented or otherwise connected within the capis the stopper 15 provided with a conical valve 16 arranged to normallyclose the upper or rear end of the ink chamber by seating within thevalve seat 10.

The barrel of the pen is provided near its upper or rear end with arubber washer 17 which is cemented or otherwise secured within theannular groove 18 in the barrel portion of thepen. The usual cap 19 isprovided for the pen and provided with the internal screw threads 20arranged to engage the threads 21 upon the lower end of the barrel inorder to protect the pen point when not in use.

This cap is arranged to fit loosely over the rear end of the barrel ofthe pen as shown in Fig. 1, the washer 17 engaging the rality of annulargrooves 23v is formed around the'interior ofthe lneck portion 1l.

These Grooves are Jrovid'ed as an additionalv Y on q u n precaution toprevent any ink which might creep around the valve- 16' from passingthrough thegrooves 'l2 andthrou'gh the' aperture 22 and'upon theoperators fingers when the pen is being-filled. l

" The operation of the device is vas follows:

- When it is desired to ll the penthe inner cap 13y is'unscrewed'suiiicient toV uncover the grooves v12 formed -in the neckVportion Y11 of the pen at the Sametime unseating the valve 16 from itsseatl '10Q The chamber or interiorofffthe barrel of the'pen is thusopened tothe outer atmosphere through the Y valve'land` grooves l2.' v

lThe cap =19is then' placed upon the end of the barrel in the positionshown in Fig. l and is grasped Vby the operator, one finger being'covered over the aperture 22. The nozzle-8 isthenjinserted intotheljottle ori other receptacle from which thei-nlc istobewithdrawn andthe cap 19'is withdrawnfrom' the end of the barrel sucking the inkup:through'the nozzle ,and intol thebarrel ofthe pen.

The cap 18 is then screw-ed down into place closing' the valve lfand thepen is ready for use. When writinglwith the pen the caplS maybelpartially unscrewed to allow `atmospheric air .to entery the upper endof the inlr chambercausing a freer flow of link at the pen point. All ofthe parts of the pen are made of transparent material with the, possibleexception of the gold pen n point, the yrubber washer 17v and the`rubber kcushion or disk JA.'

Although the ldrawings and above specification disclose the best mode inwhich I have contemplated embodying my invention I desire to be notlimited tothe details of such disclosure, for, in the further practi-Acal" application, of my invention, many lchanges in form andconstruction may be made, as'v circumstances Vrequire or experiencesuggests, without departing from the spiritk of the invention, withinthescope of theappended claim. l

I claim: Y

A selffilling fountain pen comprising-"a barrel portion having anaperture in its rear e endf andl threaded reduced neclrextending beyondits rear end, said neck being pro- Y vided with longitudinal grooves inits outer surface,a screw threaded cap'fitting upon saidl neck andnormally yclosing, said grooves, the interior of said/neckbeingxprovided with a-nnula'r-1 grooves, a valve carried byV said capand arranged to close, the aperture in fthe end of the barrel, aresilient peripheral `washer located around the barrel Vand. an

elongated cap arranged to slide over theirear end ofthe barrelandvtightly fitting. upon said-washer.l -V i In testimony that Iclaimfhe above,.I have `hereunto subscribed my name.

rHoMAsA. Diciriusou.

